From 4941617b4d4b0bd9cabd9645566bfe03f18eada6 Mon Sep 17 00:00:00 2001
From: sunaiwen <sunivengg@gmail.com>
Date: Tue, 5 Apr 2016 16:50:49 +0800
Subject: [PATCH] fixbug: 'this' may not point to window object (e.g. when is
 bundled via webpack)

---
 src/echo.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/echo.js b/src/echo.js
index f307e8f..bee4154 100644
--- a/src/echo.js
+++ b/src/echo.js
@@ -8,7 +8,7 @@
   } else {
     root.echo = factory(root);
   }
-})(this, function (root) {
+})(window, function (root) {
 
   'use strict';